Are human alone in universe?

I think that humans are not alone they are surrounded by other creatures, this world is vast and immeasurable how many fields are filled by the whole thing. Since humans and all living creatures on earth, if the place is full of everything then of course the way that they can stay and breed on the planet other than Earth.

I always believe that there is something else in the universe. Since the universe is unlimited, so we have not found it out yet. All we have known is limited. It must be something out of our imagination. There is a famous quotation from a science fiction movie called Contact: If humans were the only life in the universe it would 'be a terrible waste of space. I love China

I am of the mind that life itself is common, perhaps even right under our noses in our own solar system. Places like martian soil likely contains or at least at one time probably contained microbal life. the oceans of Europa may even contain simple life forms... civilization is also probaly out there somewhere too but probably much rarer, perhaps only one or two in every galaxy. there is the possiblity too that if there was intelligant life near us (near as in astronomical terms) it may have come and gone already ages ago and we would never have even been aware of it's existence.

We are not alone in the Universe because it is so big and there is more than likely other planets like our own that have similar conditions. I would go as far to say that there are most likely creatures/beings that are smarter than us or at least more advance than us. I am thinking space traveling not just simple planet stuck beings.

I'm no scientist so I wouldn't know for sure but I'm guessing there are other life forms somewhere out ther in the universe. It raises a question, at least for me. Are they close enough in their DNA make up to be considered as "human"? Are they humanoid in forms? I almost wanna say human race is alone out there but that might be nit-picking. I'm not saying there are no life forms of any kind, just ones that share same exact DNA like us. Scientists said only 2% or 3%, not sure which, of difference in our gene makes us different than a monkey. No matter how close aliens may look like us, there might be enough difference in their genes for them to be completely different from us. As per race of being that are may be not exactly the same but like us or at least resemble us, may be?!?!?!?!?!

With so many planets in so many different galaxies, I don't see how ours could possibly be the only one with life forms. Impossible to know what form this life takes. I don't think there would be little green men or that aliens walk amongst us. The planets with life are probably so distant that we'll never know.